Step-by-step explanation:
Since, x=8 and x=-5 are the roots.
Therefore, (x - 8) & (x - 5) will be factors.
Hence, required quadratic equation can be given as:

What are you supposed to 'do' with it ?
There's a very simple reason why no 'solution' is possible:
In order to find a unique solution, you need as many equations
as variables. This is one equation in two variables, so it has
infinitely many solutions ... pairs of numbers for 'x' and 'y' that
make the equation a true statement.
Here's one of them: (π/2, 0) .
I’m not positive on what you’re asking but I’ll give my answer to my best ability.
If you’re talking about the SAT score range, it is scored between 400 and 1600 for your total score, and 200-800 for each of your two subscores. One subscore is for Math, and then one subscore is your combined Reading and Writing scores to make one Evidence-Based Reading and Writing score. If that makes any sense. I hope I’ve helped and if you’ve got a different question there is always the comment box!